LuckyHigh Square Hole Mortise Chisel Drill Bit Tools 7Pcs Different Sizes 1/4" 5/16" 3/8" 1/2" 9/16" 5/8" 3/4" Square Drill Bit
- 7 different sizes mortise chisel drill bit 1/4 Inch (6.4mm), 5/16 Inch (8mm), 3/8 Inch (9.5mm), 1/2 Inch (12.7mm), 9/16 Inch (14mm), 5/8"(16mm), 3/4 Inch (19mm)..
- Material: square hole drill bits are made of high-speed steel, with high hardness up to HRC48 - 50, durable and practical, being heat treatment for a long-term use.
- Fine workmanship: finished with fine polishment, these square drill bits come with no burrs to provide you a smooth drilling experience.Each drill is packed in a single plastic case, easy to maintain..
- These woodworking morstising chisel bits set fit mortise and drill accessories, mainly used for woodworking aspects in construction, installation, renovation, decoration industry, etc..
- Notice: Mortising chisel drill bit needs to cooperate with square hole drill machine (mortise and tenon) use and can not use with hand-operated electric drill.